[ Tests ] Add new test for ProcessHandlerFilter (#11133)

pulsar-broker/src/test/java/org/apache/pulsar/broker/web/ProcessHandlerFilterTest.java

@@ -0,0 +1,83 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pulsar.broker.web;
+
+import java.io.IOException;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.core.MediaType;
+import org.apache.pulsar.broker.PulsarService;
+import org.apache.pulsar.broker.ServiceConfiguration;
+import org.apache.pulsar.broker.intercept.BrokerInterceptor;
+import org.mockito.Mockito;
+import org.testng.annotations.Test;
+import org.testng.collections.Sets;
+
+public class ProcessHandlerFilterTest {
+
+    @Test
+    public void testInterceptorOnFilter() throws ServletException, IOException {
+        PulsarService mockPulsarService = Mockito.mock(PulsarService.class);
+        BrokerInterceptor spyInterceptor = Mockito.spy(BrokerInterceptor.class);
+        HttpServletRequest mockHttpServletRequest = Mockito.mock(HttpServletRequest.class);
+        HttpServletResponse mockHttpServletResponse = Mockito.mock(HttpServletResponse.class);
+        ServiceConfiguration mockConfig = Mockito.mock(ServiceConfiguration.class);
+        FilterChain mockFilterChain = Mockito.mock(FilterChain.class);
+        Mockito.doReturn(spyInterceptor).when(mockPulsarService).getBrokerInterceptor();
+        Mockito.doReturn(mockConfig).when(mockPulsarService).getConfig();
+        Mockito.doReturn(Sets.newHashSet("Interceptor1", "Interceptor2")).when(mockConfig).getBrokerInterceptors();
+        ProcessHandlerFilter processHandlerFilter = new ProcessHandlerFilter(mockPulsarService);
+        processHandlerFilter.doFilter(mockHttpServletRequest, mockHttpServletResponse, mockFilterChain);
+        Mockito.verify(spyInterceptor).onFilter(mockHttpServletRequest, mockHttpServletResponse, mockFilterChain);
+    }
+
+    @Test
+    public void testChainDoFilter() throws ServletException, IOException {
+        PulsarService mockPulsarService = Mockito.mock(PulsarService.class);
+        BrokerInterceptor spyInterceptor = Mockito.mock(BrokerInterceptor.class);
+        HttpServletResponse mockHttpServletResponse = Mockito.mock(HttpServletResponse.class);
+        ServiceConfiguration mockConfig = Mockito.mock(ServiceConfiguration.class);
+        FilterChain spyFilterChain = Mockito.spy(FilterChain.class);
+        Mockito.doReturn(spyInterceptor).when(mockPulsarService).getBrokerInterceptor();
+        Mockito.doReturn(mockConfig).when(mockPulsarService).getConfig();
+        Mockito.doReturn(Sets.newHashSet()).when(mockConfig).getBrokerInterceptors();
+        // empty interceptor list
+        HttpServletRequest mockHttpServletRequest = Mockito.mock(HttpServletRequest.class);
+        ProcessHandlerFilter processHandlerFilter = new ProcessHandlerFilter(mockPulsarService);
+        processHandlerFilter.doFilter(mockHttpServletRequest, mockHttpServletResponse, spyFilterChain);
+        Mockito.verify(spyFilterChain).doFilter(mockHttpServletRequest, mockHttpServletResponse);
+        Mockito.clearInvocations(spyFilterChain);
+        // request has MULTIPART_FORM_DATA content-type
+        Mockito.doReturn(Sets.newHashSet("Interceptor1","Interceptor2")).when(mockConfig).getBrokerInterceptors();
+        HttpServletRequest mockHttpServletRequest2 = Mockito.mock(HttpServletRequest.class);
+        Mockito.doReturn(MediaType.MULTIPART_FORM_DATA).when(mockHttpServletRequest2).getContentType();
+        ProcessHandlerFilter processHandlerFilter2 = new ProcessHandlerFilter(mockPulsarService);
+        processHandlerFilter2.doFilter(mockHttpServletRequest2, mockHttpServletResponse, spyFilterChain);
+        Mockito.verify(spyFilterChain).doFilter(mockHttpServletRequest2, mockHttpServletResponse);
+        Mockito.clearInvocations(spyFilterChain);
+        // request has APPLICATION_OCTET_STREAM content-type
+        Mockito.doReturn(MediaType.APPLICATION_OCTET_STREAM).when(mockHttpServletRequest2).getContentType();
+        processHandlerFilter2.doFilter(mockHttpServletRequest2, mockHttpServletResponse, spyFilterChain);
+        Mockito.verify(spyFilterChain).doFilter(mockHttpServletRequest2, mockHttpServletResponse);
+    }
+
+
+}